| NAME | LEVEL | TYPE | GROUP |
| Babamon | Mega | Vaccine | Ancient |
| Badamon | Mega | ||
| Baihumon | Mega | ||
| Bakemon | Champion | Virus | Ghost |
| Baronmon | Armour | ||
| Beelzemon | Champion | ||
| Betamon | Rookie | Virus | Amphibian |
| BigMamemon | Ultimate | Data | Mutant |
| Birdramon | Champion | Vaccine | Bird |
| Biyomon | Rookie | Vaccine | Bird |
| Black Tailmon | Champion | Virus | Demon Beast |
| BlackWarGreymon | Mega | Virus | Dinosaur |
| Blossomon | Ultimate | Data | Vegetation |
| BlueMeramon | Ultimate | Data | Fire |
| Boarmon | Armour | ||
| Boltmon | Mega | Data | Android |
| Botamon | Fresh | None | Micro |
| Brachiomon | Ultimate | Data | Dinosaur |
| Bukamon | In-training | None | Micro |
| Bullmon | Armour | ||
| Butterflymon | Armour | Insect |